Seven Shape Toothbrush

ABSTRACT

This toothbrush has the feature to present an independent base of support for the bristles, base that is applied to the structure of the toothbrush itself. It has been conceived to make possible this operation: while a half of the base remains adherent to the toothbrush structure, the second half can be raised, giving to the whole base a curved angled profile. A half of this base has this property to be free to rise at an angle, driven by a sliding rod which is pushed with a finger of the hand holding the toothbrush. The rod slides through an inclined opening along a specially enlarged section of the handle. In order to return to the horizontal position of the base, the rod itself is retracted, in the same way, using a finger of the hand holding the toothbrush, while the lowering of the base itself is facilitated by the pressure of the toothbrush on the teeth.

This toothbrush has the feature to present an independent base of support for the bristles, base that is applied to the structure of the toothbrush itself. It has been conceived to make possible this operation: while a half of the base remains adherent to the toothbrush structure, the second half can be raised, giving to the whole base a curved angled profile. A half of this base has this property to be free to rise at an angle, driven by a sliding rod which is pushed with a finger of the hand holding the toothbrush. The rod slides through an inclined opening along a specially enlarged section of the handle. In order to return to the horizontal position of the base, the rod itself is retracted, in the same way, using a finger of the hand holding the toothbrush, while the lowering of the base itself is facilitated by the pressure of the toothbrush on the teeth. FIGS. 1-2-3.

As explained, the base on which the bristles are affixed has to be constructed as an independent body that is applied on the structure of the toothbrush. There are several ways to obtain this coupling between this base and the structure of the toothbrush:

The first is a simple gluing of a section of the base on the toothbrush structure.

A second system is represented by creating extremities composed of plastic or rubber material collapsible, projecting from the lower side of the section of the base, that engage onto holes present in the structure of the toothbrush, creating a coupling between the two, as shown in FIG. 4.

As third system the base with the bristles can be conceived as a slide to insert in the structure of the toothbrush suitable shaped to accommodate a section of the slide itself, FIG. 5.

For the second and third system, the base can be removed and replaced with a spare, when the bristles are worn. This base must obviously be made of a material such as to be able to support the bristles and at the same time to be curved to allow folding, according to the operation of the toothbrush. It is possible to provide different bases with different stiffness of the bristles, so as to allow wider and more accurate choice by the users. The material of which this toothbrush is composed are not different from those generally used and adopted for the other toothbrushes on the market.

The curve of the base supporting the bristles is conceived to allow the cleaning of those areas in the rear of dental arch, which are otherwise accessible only from the bristles located in the end section in a traditional toothbrush; in this way, compared to a traditional toothbrush, the effectiveness of cleaning is certainly greater. Also for the side teeth, anterior and lateral front this brush proves to be more effective, being able to adapt to the curve of the dental arch.

With half of the base in an curved position you can reach those teeth located in the extreme rear dental arch, which is very useful in particular when the teeth located here prove to be isolated due to extraction of other adjacent teeth, a common occurrence, for example, with the last molar teeth, so called wisdom teeth. Since this portion of the base does not have a limited number of bristles, as occurs in traditional toothbrushes that have a small group of longer bristles situated at the end of the base itself, but a greater number of them, the cleaning of the posterior teeth is much more effective.

The number and the quality of the bristles, and their position on the support base, is consistent and constant, without empty areas, so as to constitute a valid and effective area of contact with the teeth.

The toothbrush can be disassembled in its main parts, allowing a thorough cleaning and therefore a greater hygiene.

Note: The drawings attached hereto are intended only as a description of the mechanism, therefore they do not have any reference to the aesthetics of the toothbrush which can be chosen by any possible manufacturer. 

1— This toothbrush has the feature to present an independent base of support for the bristles, base that is applied to the structure of the toothbrush itself. It has been conceived to make possible this operation: while a half of the base remains adherent to the toothbrush structure, the second half can be raised, giving to the whole base a curved angled profile. A half of this base has this property to be free to rise at an angle, driven by a sliding rod which is pushed with a finger of the hand holding the toothbrush. The rod slides through an inclined opening along a specially enlarged section of the handle. In order to return to the horizontal position of the base, the rod itself is retracted, in the same way, using a finger of the hand holding the toothbrush, while the lowering of the base itself is facilitated by the pressure of the toothbrush on the teeth. FIGS. 1-2-3. As explained, the base on which the bristles are affixed has to be constructed as an independent body that is applied on the structure of the toothbrush. There are several ways to obtain this coupling between this base and the structure of the toothbrush: 1— The first is a simple gluing of a section of the base on the toothbrush structure. 2— A second system is represented by creating extremities composed of plastic or rubber material collapsable, projecting from the lower side of the section of the base, that engage onto holes present in the structure of the toothbrush, creating a coupling between the two, as shown in FIG.
 4. 3— As third system the base with the bristles can be conceived as a slide to insert in the structure of the toothbrush suitable shaped to accommodate a section of the slide itself, FIG.
 5. 